U.S. auto safety regulators are investigating Tesla Inc.’s advanced driver-assistance system known as Autopilot after a series of crashes involving emergency vehicles.

The National Highway Traffic Safety Administration said in a document made public Monday that it had identified 11 crashes since early 2018 in which a Tesla vehicle using the company’s driver-assistance system struck one or more vehicles involved in an emergency-response situation.

NHTSA has been looking more closely at advanced driver-assistance systems such as Autopilot as they have become more ubiquitous and safety concerns have grown. The agency recently began requiring companies to regularly report crashes involving advanced driver-assistance or automated driving systems to the agency.

Earlier

U.S. safety regulators are probing crashes involving Teslas, suspecting the company’s Autopilot system might be involved. WSJ’s Robert Wall reports on how some motorists may mistakenly think Autopilot is a self-driving feature that doesn’t require their attention. (Video from 3/18/21) The Wall Street Journal Interactive Edition

Write to Rebecca Elliott at rebecca.elliott@wsj.com